107 lines
3.9 KiB
JavaScript
107 lines
3.9 KiB
JavaScript
'use strict';
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var log = require('../log.js');
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var stringify = require('../stringify/stringify.js');
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var identity = require('./identity.js');
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var Scalar = require('./Scalar.js');
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var toJS = require('./toJS.js');
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const MERGE_KEY = '<<';
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function addPairToJSMap(ctx, map, { key, value }) {
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if (ctx?.doc.schema.merge && isMergeKey(key)) {
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value = identity.isAlias(value) ? value.resolve(ctx.doc) : value;
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if (identity.isSeq(value))
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for (const it of value.items)
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mergeToJSMap(ctx, map, it);
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else if (Array.isArray(value))
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for (const it of value)
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mergeToJSMap(ctx, map, it);
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else
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mergeToJSMap(ctx, map, value);
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}
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else {
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const jsKey = toJS.toJS(key, '', ctx);
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if (map instanceof Map) {
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map.set(jsKey, toJS.toJS(value, jsKey, ctx));
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}
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else if (map instanceof Set) {
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map.add(jsKey);
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}
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else {
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const stringKey = stringifyKey(key, jsKey, ctx);
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const jsValue = toJS.toJS(value, stringKey, ctx);
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if (stringKey in map)
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Object.defineProperty(map, stringKey, {
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value: jsValue,
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writable: true,
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enumerable: true,
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configurable: true
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});
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else
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map[stringKey] = jsValue;
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}
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}
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return map;
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}
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const isMergeKey = (key) => key === MERGE_KEY ||
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(identity.isScalar(key) &&
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key.value === MERGE_KEY &&
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(!key.type || key.type === Scalar.Scalar.PLAIN));
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// If the value associated with a merge key is a single mapping node, each of
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// its key/value pairs is inserted into the current mapping, unless the key
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// already exists in it. If the value associated with the merge key is a
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// sequence, then this sequence is expected to contain mapping nodes and each
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// of these nodes is merged in turn according to its order in the sequence.
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// Keys in mapping nodes earlier in the sequence override keys specified in
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// later mapping nodes. -- http://yaml.org/type/merge.html
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function mergeToJSMap(ctx, map, value) {
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const source = ctx && identity.isAlias(value) ? value.resolve(ctx.doc) : value;
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if (!identity.isMap(source))
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throw new Error('Merge sources must be maps or map aliases');
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const srcMap = source.toJSON(null, ctx, Map);
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for (const [key, value] of srcMap) {
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if (map instanceof Map) {
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if (!map.has(key))
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map.set(key, value);
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}
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else if (map instanceof Set) {
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map.add(key);
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}
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else if (!Object.prototype.hasOwnProperty.call(map, key)) {
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Object.defineProperty(map, key, {
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value,
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writable: true,
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enumerable: true,
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configurable: true
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});
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}
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}
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return map;
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}
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function stringifyKey(key, jsKey, ctx) {
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if (jsKey === null)
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return '';
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if (typeof jsKey !== 'object')
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return String(jsKey);
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if (identity.isNode(key) && ctx?.doc) {
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const strCtx = stringify.createStringifyContext(ctx.doc, {});
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strCtx.anchors = new Set();
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for (const node of ctx.anchors.keys())
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strCtx.anchors.add(node.anchor);
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strCtx.inFlow = true;
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strCtx.inStringifyKey = true;
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const strKey = key.toString(strCtx);
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if (!ctx.mapKeyWarned) {
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let jsonStr = JSON.stringify(strKey);
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if (jsonStr.length > 40)
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jsonStr = jsonStr.substring(0, 36) + '..."';
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log.warn(ctx.doc.options.logLevel, `Keys with collection values will be stringified due to JS Object restrictions: ${jsonStr}. Set mapAsMap: true to use object keys.`);
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ctx.mapKeyWarned = true;
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}
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return strKey;
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}
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return JSON.stringify(jsKey);
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}
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exports.addPairToJSMap = addPairToJSMap;
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